| calculateConc | Target copies estimation | 
| popPCR | EM Mixture Model fitting of dPCR droplet fluorescence | 
| printSummaryConc | Print result summary of popPCR | 
| printSummaryFit | Print fitted mixture model estimates from popPCR | 
| x_multiPop | dPCR sample w/ >=3 populations | 
| x_onePop | dPCR sample w/ 1 population | 
| x_twoPop | dPCR sample w/ 2 populations |